Optical Investigations on Partially Premixed Diesel Combustion for Different Operating Parameters

2008 ◽  
Author(s):  
Marcus Schmid ◽  
Max Kaiser ◽  
Peter Koch ◽  
Michael Wensing ◽  
Alfred Leipertz
Keyword(s):  
Operating Parameters ◽  
Diesel Combustion ◽  
Partially Premixed

scholarly journals A Predictive Real Time NOx Model for Conventional and Partially Premixed Diesel Combustion

2006 ◽  
Author(s):  
Magnus Andersson ◽  
Bengt Johansson ◽  
Anders Hultqvist ◽  
Christof Noehre
Keyword(s):  
Real Time ◽  
Diesel Combustion ◽  
Partially Premixed

Partially Premixed Combustion Application for Diesel Power Improvement

2017 ◽  
Author(s):  
Michael Walker ◽  
Robert Kelso ◽  
Kevin Bowes ◽  
Len Hamilton ◽  
Dianne Luning Prak ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Jet Fuel ◽  
Premixed Combustion ◽  
Intake Manifold ◽  
Diesel Combustion ◽  
Unburned Hydrocarbon ◽  
Advanced Combustion ◽  
Partially Premixed Combustion ◽  
Partially Premixed ◽  
Start Of Combustion

A partially premixed combustion (PPC) approach was applied in a single cylinder diesel research engine in order to characterize engine power improvements. PPC is an alternative advanced combustion approach that generally results in lower engine-out soot and NOx emission, with a moderate penalty in engine-out unburned hydrocarbon (UHC) and carbon monoxide (CO) emissions. In this study PPC is accomplished with a minority fraction of jet fuel injected into the intake manifold, while the majority fraction of jet fuel is delivered directly to the combustion chamber near the start of combustion (SOC). Four compression ratios (CR) were studied. Exhaust emissions plus exhaust opacity and particulate measurements were performed during the experiments in addition to fast in-cylinder combustion metrics. It was seen that as CR increased the soot threshold equivalence ratio decreased for conventional diesel combustion, however this afforded an increased opportunity for higher levels of port injected fuel leading to power increases from 5 to 23% as CR increased from 14 to 21.5. PPC allowed for these power increases (defined by a threshold opacity level of 3%) due to smaller particles (and lower overall number of particles) in the exhaust that influence measured opacity less significantly than larger and more numerous conventional diesel combustion exhaust particulates. Carbon monoxide levels at the higher PPC driven power levels were only modestly higher, although NOx was generally lower due to the overall enriched operation.

Combustion Modeling of Diesel Combustion with Partially Premixed Conditions

2007 ◽  
Author(s):  
Bing Hu ◽  
Rahul Jhavar ◽  
Satbir Singh ◽  
Rolf D. Reitz ◽  
Christopher J. Rutland
Keyword(s):  
Diesel Combustion ◽  
Combustion Modeling ◽  
Partially Premixed

Conceptual models for partially premixed low-temperature diesel combustion

2013 ◽  
Vol 39 (2-3) ◽  
pp. 246-283 ◽  
Author(s):  
Mark P.B. Musculus ◽  
Paul C. Miles ◽  
Lyle M. Pickett
Keyword(s):  
Low Temperature ◽  
Conceptual Models ◽  
Diesel Combustion ◽  
Partially Premixed
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